Course detail

Communication systems 2

FEKT-BKC-KS2Acad. year: 2021/2022

Following the subject Communication systems 1, students first become familiar with radio interface of communication systems (radio receiver and transmitter conception and architecture, level of their digitization, software defined radio) and with the specific building blocks function (amplifiers, mixers, oscillators, frequency synthesizers, filters, etc.). In the next part, the introduction to the current wireless communication systems will be given (fundamentals of radio and television broadcasting, satellite communications, cellular radiocommunication systems, etc.). Following part will be aimed at voice and data transmission via public switched telephone networks (network digitalization, modems, ISDN and xDSL technologies). Last part of the subject will be focused at the data transmission and network technologies (fundamentals of optical communication, network topologies, wireles networks PAN, LAN a WAN, digital hierarchy SDH/SONET, network components, protocols and services, etc.).

Language of instruction

Czech

Number of ECTS credits

6

Mode of study

Not applicable.

Guarantor

prof. Ing. Aleš Prokeš, Ph.D.

Department

Department of Radio Electronics (UREL)

Learning outcomes of the course unit

The graduate is able to:
1. Orientate oneself in current wired, optical and wireless communication systems for the transmission of audio, video and data signals,
2. describe their architecture, eventual network structure and communication protocols used,
3. explain and apply methods of signal processing and techniques of sharing of communications resources,
4. explain their specific circuit solution especially with the focus on radiocommunication systems

Prerequisites

Fundamentals of signal processing, electronics, and communication systems at the BPC-KS1 course level are required.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods depend on the type of course unit as specified in the article 7 of BUT Rules for Studies and Examinations. Methods include lectures and laboratory exercises. Course is taking advantage of e-learning (Moodle) system.

Assesment methods and criteria linked to learning outcomes

Students can obtain 25 points for the activity in laboratory exercises. The final exam is awarded by 75 points (maximally).

Course curriculum

1. Basic architectures of radio receivers and transmitters with analogue and digital signal processing.
2. Principle and operation of analogue blocks. Oscillators, synthesizers, mixers, amplifiers, filters.
3. Software defined radio. ADC and DAC converters, bandpas sampling. Algorithms and building blocks.
4. Digital realization of mixers, filters, synthesizers. Methods of hardware implementation.
5. Analog and digital systems for radio and television broadcasting. DAB, DMB, DVB, Radio mondiale.
6. Cellular radiotelephone systems. GSM, UMTS, LTE. Cordless Phones. DECT.
7. Satellite communication. Transponders. Transmission of TV broadcasts, phone calls, and data.
8. Public switched telephone network. Call and data transfer. ISDN networks. xDSL technology.
9. Optical communication systems. Optical fibers, terminal equipment. ISO/OSI reference model.
10. Subdivision of computer networks. Network architectures (Token-Ring, Ethernet, FDDI, ATM).
11. Wireless networks PAN, LAN a WAN. SDH/SONET networks. Network components and protocols.
12. Ethernet. TCP/IP network architecture. Layer protocols.
13. Internet. History and services.

Work placements

Not applicable.

Aims

The aim of the course is to acquaint students with the current wired, optical and wireless communication systems for the transmission of audio, video and data signals, to show their architecture, methods of signal processing, techniques of sharing of communications resources, communication protocols, and eventual network structure, to explain their specific circuit solution especially with the focus on radiocommunication systems.

Specification of controlled education, way of implementation and compensation for absences

Evaluation of activities is specified by a regulation, which is issued by the lecturer responsible for the course annually.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

COUCH, L.V. Digital and analog Communications. 6. vyd. Upper Saddle River, Prentice Hall, 2001 (CS)
CHIEN, Ch. Digital Radio on a Chip. Kluwer Academic Publishers, Norwell 2000 (EN)
PROKEŠ, A. Rádiové přijímače a vysílače. Přednášky. Rádiové přijímače a vysílače. Přednášky. FEKT VUT Brno, Ústav radioelektroniky: MJ Servis s.r.o., 2002. ISBN: 80-214-2263- 7. (CS)
SKLAR, B. Digital Communications: Fundamental and Applications, 3rd Edition. Pearson, 2020 (CS)

Recommended reading

ŽALUD, V. Moderní radioelektronika. Praha, BEN, 2000 (CS)

Elearning

eLearning: currently opened course

Classification of course in study plans

  • Programme BKC-EKT Bachelor's 3 year of study, summer semester, compulsory

Type of course unit

 

Lecture

26 hod., optionally

Teacher / Lecturer

prof. Ing. Aleš Prokeš, Ph.D.

Syllabus

Frequency bands. Analog and digital receiver architecture. Significant parameters.
Receiver input circuits. Selective tuned amplifiers.
Additive and multiplicative mixers. Mixers with spurious product reduction. Feedback LC and crystal oscillators. Voltage-controlled oscillators.
Frequency synthesis. Phase-locked loop. DDFS. IF amplifiers.
AM, FM and PM demodulators. MPSK, MQAM, FSK, GMSK demodulators. Carrier recovery and symbol timing recovery circuits.
Auxiliary receiver circuits. AVC and AFC circuits.
Analog and digital transmitters architecture. Significant parameters. Power amplifiers. A, B and C classes. High-efficiency power amplifiers, operating classes D, E and F. Power amlifier linearisation techniques.
AM, FM and PM modulators. MPSK, MQAM, FSK, GMSK modulators. Auxiliary transmitter circuits. Drivers. Power combiner.
Stereo broadcasting. Stereo coders and decoders. Radio Data System (RDS).
Digital signal processing used in the radio receivers and transmitters. Frequency downconversion, interpolation, decimation, frequency filtering, matched filtering, bandpass sampling, etc. Software radio.
Digital audio broadcasting T-DAB.

Laboratory exercise

26 hod., compulsory

Teacher / Lecturer

prof. Ing. Aleš Prokeš, Ph.D.

Syllabus

SNR and SINAD sensitivity of the radio receiver.
Characteristics of AGC circuitry
Characteristics of AFC circuitry.
Class A, B, and C power amplifier linearity and efficiency.
Stereo decoder characteristic.
Short Wave transmitter spectrum properties in the case of AM, FM, CW, and SSB modulation.
Receiver noise figure.
Digital modulation properties.

Elearning

eLearning: currently opened course